TCM Adaptation - 845RE/8HP45/8HP70
WARNING: This page is about a different car, the 2014 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
The 845RE/8HP45/8HP70 transmission continuously self calibrates and learns shift points and clutch apply times. It is necessary to perform a drive cycle to provide the proper baseline transmission adaptation. Refer to the appropriate Service Information .